Acryptolaria corniformis Naumov & Stepanjants 1962
Acryptolaria corniformis Naumov & Stepanjants, 1962 (Figs 2A, 4A, 5B) Acryptolaria corniformis Naumov & Stepanjants, 1962: 74, fig. 2; Stepanjants, 1979: 51, pl. 9, figs 1–3; Peña Cantero et al ., 2007: 243–245, figs 5, 15C, 17D, tab. V. Acryptolaria cf. corniformis— Peña Cantero & Vervo...
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Zenodo
2020
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Online Access: | https://dx.doi.org/10.5281/zenodo.3798669 https://zenodo.org/record/3798669 |
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ftdatacite:10.5281/zenodo.3798669 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Leptothecata Lafoeidae Acryptolaria Acryptolaria corniformis |
spellingShingle |
Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Leptothecata Lafoeidae Acryptolaria Acryptolaria corniformis Peña Cantero, Álvaro L. Acryptolaria corniformis Naumov & Stepanjants 1962 |
topic_facet |
Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Leptothecata Lafoeidae Acryptolaria Acryptolaria corniformis |
description |
Acryptolaria corniformis Naumov & Stepanjants, 1962 (Figs 2A, 4A, 5B) Acryptolaria corniformis Naumov & Stepanjants, 1962: 74, fig. 2; Stepanjants, 1979: 51, pl. 9, figs 1–3; Peña Cantero et al ., 2007: 243–245, figs 5, 15C, 17D, tab. V. Acryptolaria cf. corniformis— Peña Cantero & Vervoort, 2010: 280–282, fig. 5, tab. 6. Material examined. Eltanin : 27/1951 , two fragments up to 18 mm long (mounted on a microslide). Description. Hydrothecae alternate, more or less in one plane, in a distinct zigzag pattern. Hydrotheca tubular, free part roughly cylindrical, although diameter might slightly decrease from aperture in some hydrothecae; diameter distinctly decreasing basally at adnate part. Hydrotheca curved outwards, sometimes with distinct inflection point where it becomes free. Hydrotheca adnate to internode for half, or even more, of its adcauline length. Adcauline wall slightly convex, sometimes almost straight at free and adnate parts. Abcauline wall slightly concave by the middle, practically straight at basal and distal third. A ring of desmocytes present at base of hydrotheca. Hydrothecal aperture circular, directed upwards and outwards. Rim even, with up to four renovations. Measurements (in µm). Hydrothecae : abcauline wall 1550–1600, free part of adcauline wall 780–900, adnate part of adcauline wall 1000–1040, adcauline wall 1840–1900, diameter at aperture 270–370, diameter at base 100. Cnidome (taken with x40): larger microbasic mastigophores, range 12.5–17.5 x 5–7.5. Remarks. Our material agrees with the holotype in having internodes in a distinct zigzag, in the shape and size of hydrotheca and in the size of the nematocysts. The available knowledge of this species is limited, as it is based on a 20-mm-long stem fragment (holotype) (cf. Peña Cantero et al . 2007), a 12-mm-long, unbranched fragment, studied by Peña Cantero & Vervoort (2010), and two up to 18-mm-long fragments (present material). All the material is preserved in slides, which makes it difficult tracing and measuring nematocysts. As a result, the information concerning this issue is scarce and should be taken with caution. Peña Cantero et al . (2007) found three putative nematocysts after careful examination of the type material (10–15 x 3–5 µm), Peña Cantero & Vervoort (2010) found four slightly larger nematocysts (16–19 x 8–9 µm) and I could find five (12.5–17.5 x 5–7.5 µm). The combination of size and shape of hydrotheca, together with the size of the nematocysts, allows me to assign the present material with confidence. Ecology and distribution. Acryptolaria corniformis had been collected at depths between 282 (Peña Cantero & Vervoort 2010) and 289 m (cf. Naumov & Stepanjants 1962; Stepanjants 1979); present material at 1442–1444 m, considerably extending its lower bathymetric limit. Known from off Sabrina Coast, Antarctica (Naumov & Stepanjants 1962; Stepanjants 1979) and from the Loyalty Islands area, New Caledonian region (Peña Cantero & Vervoort 2010); present material, representing the third record for the species, comes off Buckle Island in the Balleny Islands. : Published as part of Peña Cantero, Álvaro L., 2020, Species of Acryptolaria Norman, 1875 (Cnidaria: Hydrozoa) collected by US Antarctic and sub-Antarctic expeditions, pp. 277-294 in Zootaxa 4767 (2) on page 281, DOI: 10.11646/zootaxa.4767.2.4, http://zenodo.org/record/3771174 : {"references": ["Naumov, D. V. & Stepanjants, S. D. (1962) Hydroida (Thecaphora) collected by the Soviet Antarctic Expedition on the M / V Ob in antarctic and subantarctic waters. In: Biological results of the Soviet Antarctic Expedition, 1955 - 1958, 1. Issledovaniya Fauny Morei, 1 (9), 68 - 106.", "Stepanjants, S. D. (1979) Hydroids of the antarctic and subantarctic waters. In: Biological results of the Soviet Antarctic Expedition, 6. Issledovaniya Fauny Morei, 20 (30), 1 - 200, pls. 1 - 25. [in Russian]", "Pena Cantero, A. L., Marques, A. & Migotto, A. (2007) Revision of the genus Acryptolaria Norman, 1875 (Cnidaria, Hydrozoa, Lafoeidae). Journal of Natural History, 41 (5 - 8), 229 - 291. https: // doi. org / 10.1080 / 00222930701228132", "Pena Cantero, A. L. & Vervoort, W. (2010) Species of Acryptolaria Norman, 1875 (Cnidaria, Hydrozoa, Lafoeidae) collected in the Western Pacific by various French expeditions, with the description of nineteen new species. Zoosystema, 32 (2), 267 - 332. https: // doi. org / 10.5252 / z 2010 n 2 a 5"]} |
format |
Text |
author |
Peña Cantero, Álvaro L. |
author_facet |
Peña Cantero, Álvaro L. |
author_sort |
Peña Cantero, Álvaro L. |
title |
Acryptolaria corniformis Naumov & Stepanjants 1962 |
title_short |
Acryptolaria corniformis Naumov & Stepanjants 1962 |
title_full |
Acryptolaria corniformis Naumov & Stepanjants 1962 |
title_fullStr |
Acryptolaria corniformis Naumov & Stepanjants 1962 |
title_full_unstemmed |
Acryptolaria corniformis Naumov & Stepanjants 1962 |
title_sort |
acryptolaria corniformis naumov & stepanjants 1962 |
publisher |
Zenodo |
publishDate |
2020 |
url |
https://dx.doi.org/10.5281/zenodo.3798669 https://zenodo.org/record/3798669 |
long_lat |
ENVELOPE(40.562,40.562,63.490,63.490) ENVELOPE(118.550,118.550,-67.000,-67.000) ENVELOPE(163.200,163.200,-66.833,-66.833) |
geographic |
Antarctic The Antarctic Balleny Islands Pacific Pena Sabrina Coast Buckle Island |
geographic_facet |
Antarctic The Antarctic Balleny Islands Pacific Pena Sabrina Coast Buckle Island |
genre |
Antarc* Antarctic Antarctica Balleny Islands Buckle Island |
genre_facet |
Antarc* Antarctic Antarctica Balleny Islands Buckle Island |
op_relation |
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op_rights |
Open Access info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5281/zenodo.3798669 https://doi.org/10.11646/zootaxa.4767.2.4 https://doi.org/10.5281/zenodo.3771178 https://doi.org/10.5281/zenodo.3771182 https://doi.org/10.5281/zenodo.3771184 https://doi.org/10.5281/zenodo.4581751 https: |
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ftdatacite:10.5281/zenodo.3798669 2023-05-15T13:50:03+02:00 Acryptolaria corniformis Naumov & Stepanjants 1962 Peña Cantero, Álvaro L. 2020 https://dx.doi.org/10.5281/zenodo.3798669 https://zenodo.org/record/3798669 unknown Zenodo http://zenodo.org/record/3771174 http://publication.plazi.org/id/D708FFF4FFBA9108FFB7FF9DFF8E7D0B http://treatment.plazi.org/id/AC456037602B6274FEA0FA098DB96EF7 http://treatment.plazi.org/id/03E5636AFF9DFFA6FD06545677C5F929 http://zoobank.org/urn:lsid:zoobank.org:pub:C76E1CC4-23C0-4883-AB79-B305053730B4 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/zootaxa.4767.2.4 http://zenodo.org/record/3771174 http://publication.plazi.org/id/D708FFF4FFBA9108FFB7FF9DFF8E7D0B https://dx.doi.org/10.5281/zenodo.3771178 https://dx.doi.org/10.5281/zenodo.3771182 https://dx.doi.org/10.5281/zenodo.3771184 https://dx.doi.org/10.5281/zenodo.4581751 http://treatment.plazi.org/id/AC456037602B6274FEA0FA098DB96EF7 https://dx.doi.org/10.5281/zenodo.4557172 http://treatment.plazi.org/id/03E5636AFF9DFFA6FD06545677C5F929 http://zoobank.org/urn:lsid:zoobank.org:pub:C76E1CC4-23C0-4883-AB79-B305053730B4 https://dx.doi.org/10.5281/zenodo.3798670 https://zenodo.org/communities/biosyslit Open Access info:eu-repo/semantics/openAccess Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Leptothecata Lafoeidae Acryptolaria Acryptolaria corniformis Taxonomic treatment article-journal Text ScholarlyArticle 2020 ftdatacite https://doi.org/10.5281/zenodo.3798669 https://doi.org/10.11646/zootaxa.4767.2.4 https://doi.org/10.5281/zenodo.3771178 https://doi.org/10.5281/zenodo.3771182 https://doi.org/10.5281/zenodo.3771184 https://doi.org/10.5281/zenodo.4581751 https: 2022-02-08T17:10:29Z Acryptolaria corniformis Naumov & Stepanjants, 1962 (Figs 2A, 4A, 5B) Acryptolaria corniformis Naumov & Stepanjants, 1962: 74, fig. 2; Stepanjants, 1979: 51, pl. 9, figs 1–3; Peña Cantero et al ., 2007: 243–245, figs 5, 15C, 17D, tab. V. Acryptolaria cf. corniformis— Peña Cantero & Vervoort, 2010: 280–282, fig. 5, tab. 6. Material examined. Eltanin : 27/1951 , two fragments up to 18 mm long (mounted on a microslide). Description. Hydrothecae alternate, more or less in one plane, in a distinct zigzag pattern. Hydrotheca tubular, free part roughly cylindrical, although diameter might slightly decrease from aperture in some hydrothecae; diameter distinctly decreasing basally at adnate part. Hydrotheca curved outwards, sometimes with distinct inflection point where it becomes free. Hydrotheca adnate to internode for half, or even more, of its adcauline length. Adcauline wall slightly convex, sometimes almost straight at free and adnate parts. Abcauline wall slightly concave by the middle, practically straight at basal and distal third. A ring of desmocytes present at base of hydrotheca. Hydrothecal aperture circular, directed upwards and outwards. Rim even, with up to four renovations. Measurements (in µm). Hydrothecae : abcauline wall 1550–1600, free part of adcauline wall 780–900, adnate part of adcauline wall 1000–1040, adcauline wall 1840–1900, diameter at aperture 270–370, diameter at base 100. Cnidome (taken with x40): larger microbasic mastigophores, range 12.5–17.5 x 5–7.5. Remarks. Our material agrees with the holotype in having internodes in a distinct zigzag, in the shape and size of hydrotheca and in the size of the nematocysts. The available knowledge of this species is limited, as it is based on a 20-mm-long stem fragment (holotype) (cf. Peña Cantero et al . 2007), a 12-mm-long, unbranched fragment, studied by Peña Cantero & Vervoort (2010), and two up to 18-mm-long fragments (present material). All the material is preserved in slides, which makes it difficult tracing and measuring nematocysts. As a result, the information concerning this issue is scarce and should be taken with caution. Peña Cantero et al . (2007) found three putative nematocysts after careful examination of the type material (10–15 x 3–5 µm), Peña Cantero & Vervoort (2010) found four slightly larger nematocysts (16–19 x 8–9 µm) and I could find five (12.5–17.5 x 5–7.5 µm). The combination of size and shape of hydrotheca, together with the size of the nematocysts, allows me to assign the present material with confidence. Ecology and distribution. Acryptolaria corniformis had been collected at depths between 282 (Peña Cantero & Vervoort 2010) and 289 m (cf. Naumov & Stepanjants 1962; Stepanjants 1979); present material at 1442–1444 m, considerably extending its lower bathymetric limit. Known from off Sabrina Coast, Antarctica (Naumov & Stepanjants 1962; Stepanjants 1979) and from the Loyalty Islands area, New Caledonian region (Peña Cantero & Vervoort 2010); present material, representing the third record for the species, comes off Buckle Island in the Balleny Islands. : Published as part of Peña Cantero, Álvaro L., 2020, Species of Acryptolaria Norman, 1875 (Cnidaria: Hydrozoa) collected by US Antarctic and sub-Antarctic expeditions, pp. 277-294 in Zootaxa 4767 (2) on page 281, DOI: 10.11646/zootaxa.4767.2.4, http://zenodo.org/record/3771174 : {"references": ["Naumov, D. V. & Stepanjants, S. D. (1962) Hydroida (Thecaphora) collected by the Soviet Antarctic Expedition on the M / V Ob in antarctic and subantarctic waters. In: Biological results of the Soviet Antarctic Expedition, 1955 - 1958, 1. Issledovaniya Fauny Morei, 1 (9), 68 - 106.", "Stepanjants, S. D. (1979) Hydroids of the antarctic and subantarctic waters. In: Biological results of the Soviet Antarctic Expedition, 6. Issledovaniya Fauny Morei, 20 (30), 1 - 200, pls. 1 - 25. [in Russian]", "Pena Cantero, A. L., Marques, A. & Migotto, A. (2007) Revision of the genus Acryptolaria Norman, 1875 (Cnidaria, Hydrozoa, Lafoeidae). Journal of Natural History, 41 (5 - 8), 229 - 291. https: // doi. org / 10.1080 / 00222930701228132", "Pena Cantero, A. L. & Vervoort, W. (2010) Species of Acryptolaria Norman, 1875 (Cnidaria, Hydrozoa, Lafoeidae) collected in the Western Pacific by various French expeditions, with the description of nineteen new species. Zoosystema, 32 (2), 267 - 332. https: // doi. org / 10.5252 / z 2010 n 2 a 5"]} Text Antarc* Antarctic Antarctica Balleny Islands Buckle Island DataCite Metadata Store (German National Library of Science and Technology) Antarctic The Antarctic Balleny Islands Pacific Pena ENVELOPE(40.562,40.562,63.490,63.490) Sabrina Coast ENVELOPE(118.550,118.550,-67.000,-67.000) Buckle Island ENVELOPE(163.200,163.200,-66.833,-66.833) |